Yearlong pliysical activity and health-related quality of life in older Japanese adults : new guidelines for exercise

背景：我们假设，在健康的老年人口中，与健康相关的生活质量(HRQOL)得分的临床相关性增加将与更大的日常体力活动强度和总活动量正相关。方法：对来自日本中野町的74名男性和109名女性志愿者进行了验证。年龄从65岁到85岁不等；调整了年龄对HRQOL的影响的协方差分析。在一年的时间里，每天都有体力活动的定量测量，使用的是专门改装的加速计，它可以区分11种体力活动强度。结果：结果证实了我们的假设：在满足最低习惯体力活动标准的四分之一的受试者中，HRQOL更高：男性每天5511步或更多和/或每天至少12.9分钟的代谢当量(METS)强度，女性每天4552步和/或15.0分钟的强度；结论：符合最低体力活动标准的老年人的HRQOL得分较高，应该鼓励老年人达到这些标准，即使他们的大部分活动只是低强度或中等强度的。

Background : We hypothesized that in a healthy elderly population, a clinically relevant increase in health-related quality of life(HRQOL) score would be positively associated with a greater intensity and total volume of daily physical activity.Methods : These hypotheses were tested in a cohort of 74 male and 109 female volunteers from the town of Nakanojo, Japan. Ages ranged from 65-85 years ; analyses of covariance adjusted for the effects of age upon HRQOL. Quantitative measurements of physical activity were obtained daily for one year, using a specially adapted accelerometer that distinguished 11 intensities of physical activity. HRQOL was assessed by a Japanese adaptation of the Medical Outcomes Study Short Form (SF-36) questionnaire.Results : The results confirmed our hypotheses ; HRQOL was greater in the quartile of subjects meeting minimum standards of habitual physical activity : in men 5511 or more steps per day and/or at least 12.9 min per day at an intensity >3 metabolic equivalents(METs), and in women >4552 steps per day and/or >15.0 min per day at an intensity >3 METs.Conclusions : We conclude that HRQOL scores are higher in elderly individuals who meet minimum standards of habitual physical activity, and that the elderly should be encouraged to meet such standards, even if much of their activity is at only a low or moderate intensity.